摘要
1954年在南方稻区开始实施单季改双季、间作改连作、籼稻改粳稻的"三改"方针,作为增产粮食的重大措施,其中的籼稻改粳稻,在20多年里几经起伏。1957年从日本引进的晚粳良种"农垦58",对提高产量起到了显著作用,在南方稻区作双季晚稻或一季晚稻累计种植面积9466万hm^2,成为我国推广面积最大的水稻良种之一。
In 1954, the rice regions in the south began to implement ＂San Gai＂ policy that changes rice from single-cropping to double cropping , inter cropping to continuous crop- ping, and indica to japonica , which were the major measures to increase rice produc- tion. The policy that changed rice from indica to japonica is a special case, because the devel- opment direction of ＂zai ai wan ken＂ was decided by hunan province after having a conquered career in more than 20 years. On the other hand, the improved variety named ＂nong ken 58＂ that introduced from Japan played a significant role in increasing rice production. In southern rice areas, the accumulative total planting area of double-crop late Rice or single-crop late Rice is 94. 66 million hm2, which has been one of the largest promotion areas of paddy rice improved variety.
出处
《古今农业》
2016年第1期1-17,共17页
Ancient and Modern Agriculture
关键词
20世纪中叶
南方稻区
籼改粳
农垦58
The middle twentieth century, Rice from indica to japonica, Nongken 58, Re-search of cultivation
